var num = [2, 7, 11, 15], target = 9



var twoSum = function (nums, target) {
    for (var i = 0; i < nums.length; i++) {
        //nums[i]
        for (var j = i + 1; j < nums.length; j++) {
            if (nums[i] + nums[j] === target) {
                return [i, j];
            }
        }
    }
};
console.log(i, j)

